Construction element, a module and a construction comprising such an element and method of assembly of such a construction

ABSTRACT

The invention relates to a construction element for attachment of structural elements. The element comprises an upper plate member and a lower plate member, having a same width and a same length and extending between two end portions, parallel to each other at a first distance. The upper and lower plate members are connected to each other along longitudinal sides of said plate members by means of a plurality of intermediate beams. Each end portion further comprises at least one upper and at least one lower distance element having a width and a height, and being arranged at an upper surface and a lower surface of said end portions respectively. A longitudinally transversal cross section of each end portion forms a cross-shaped circumference, said circumference comprising four right angled abutment surfaces, defined by the plate members and the distance elements. The invention also relates to a module and a construction comprising such a construction element and a method of assembly of such a construction.

TECHNICAL FIELD

The invention relates to a construction element for attachment ofstructural elements, a construction comprising such a structural elementand a method for assembly of such a construction having such aconstruction element according to the appended claims.

BACKGROUND ART

Construction elements and structures which are built using suchconstruction elements are manufactured and used under rigorous rules andclassifications as we demand high and reliable quality with regards tostructural integrity. This is especially required for all types ofstructures and buildings which are intended for living quarters andworking facilities, as personal safety is of uttermost importance forpeople spending time in such buildings and for the people and companieswho build said buildings. Furthermore, price and cost are of course alsoimportant variables for people and/or companies who acquire a buildingor facility, wherein a general goal for all involved is to make costeffective decisions when buying or selling houses and facilities.Prefabrication building systems and units have thus increased inpopularity in recent history, as it usually very cost effective toproduce at least parts of units and elements which are part of such abuilding as such work may be performed off-site in suitable factoriesand similar. The time needed for construction may also be lowered whichresults in a cost effective manufacturing process, a fast building timeand high quality of the end product.

There are a lot of various designs and embodiments of suchprefabrication systems and their ingoing construction parts, varying ina wide range depending on the type of building being built and resourcesavailable for the project. For small to average buildings intended forliving quarters there are several companies having concept ofprefabricated, at least in part, room unit, parts of houses, or almostcompletely built houses being delivered to customers where little to noconstruction work is needed on-site to complete said house. Unit typesolutions are also available where such a unit may be an individual roomor a part of a house, wherein such units are assembled on-site andcompleted into a house or similar. When construction is performed ofsuch a unit based housing, care must be taken to fit such unit togetherin the correct manner, and additional work is often needed with regardsto installations of functions such as plumbing, ventilation, electricalinstallations or other similar types of facility functionality which isneeded for living is such a building. Different types of units mayrequire special fastening elements to be attached to each other,modifications may be needed to individual units, or other, wherein theamount of work actually needed on-site may be time consuming and costly,even if a large percentage of the completed building already is builtoff-site. There are various attempts at minimizing such work, wheredifferent approaches may be made, such as pre-installing piping andelectricity in walls, floors and ceilings of prefabricated units as anexample. This is however not without its downsides as each buildingbuilt with such units are fixed to facility installations in certainplaces, wherein modification may be costly or material and resources maybe wasted.

Due to the various design and embodiments of such prefabricationbuilding systems and building, facilities and structures being resultsthereof, individual construction elements used in such systems and/orbuildings may also be subjected to high requirements with respect totheir usage, designs and/or other factors. Specially designed elementsof the sort may provide suitable usage for certain applications whichmay be deemed as adequate for those special circumstances but may thusbe non-cost effective if such elements are restricted to a select fewspecial construction applications. Regular construction elementsobtained at a standard supplier of building material and constructionalelements may not always have a wide range of usage, forcing a contractorto acquire a large variety of elements and/or components, which mayinstead be time consuming, expensive and being a cumbersome endeavour.

SUMMARY OF THE INVENTION

Despite prior art there is a need to develop a construction elementwhich is multifunctional for usage in a prefabrication building system.There is also a need to develop such a construction element which iseasy to use and provides reliable results when used in constructionwork. There is also a need to develop a module and a constructionutilizing such a construction element and a method for assembly of sucha construction.

An object of the invention is thus to provide a construction elementwhich is multifunctional for usage in a prefabrication building system.Another object of the invention is to provide a construction elementwhich is easy to use and provides reliable results when used inconstruction work. Yet another object of the invention is to provide amodule and a construction which utilizes at least one such constructionelement. A further object is to provide a method for assembly of such aconstruction.

According to an embodiment a construction element for attachment ofstructural elements is provided. The construction element may comprisean upper plate member and a lower plate member, which may have a samewidth and a same length and extending between two end portions, parallelto each other at a first distance. The upper and lower plate members maybe connected to each other along longitudinal sides of said platemembers by means of a plurality of intermediate beams. Each end portionmay further comprise at least one upper and at least one lower distanceelement having a width and a height, and may be arranged at an uppersurface and a lower surface of said end portions respectively, wherein alongitudinally transversal cross section of each end portion may form across-shaped circumference, wherein said circumference may comprise fourright angled abutment surfaces, defined by the plate members and thedistance elements.

Such a construction element provides a very versatile constructionelement with several advantageous for construction work. The pluralityof right angled abutment surfaces defined at the end portions of theconstruction element may be used for attachment to a plurality ofdifferent building elements and structures. For use in a prefabricationbuilding system the concept of the construction element comprising theplurality of abutment surfaces may be utilized for attachment of atleast one, but up to eight cuboid shaped room units, providing astandardized spacing between such units and also acting as an anchorpoint for said units and other additional structural elements related toconstruction work. By means of arranging, for example, room units at theright angled abutment surfaces as a means to build a construction havinga plurality of such room units, the structural design of theconstruction element will provide extending spaces or shafts betweeneach such room unit. The distance elements may provide and definevertical shafts between walls of room units, and the plate members willprovide and define horizontal shafts between floors and ceilings of roomunits. This has the advantage of providing a standard sized shaft for abuilding system using the concept of the construction element. Therebyadditional service installation components may very easily be installedin such shafts, which make such installations fast and easy and veryeasy to modify for each individual building project. The upper and lowerplate members, and the distance elements, may also be used as attachmentand anchoring points of other additional structural elements such asfacade elements, roof units, foundation elements, insulation material orother. The construction element may therefore provide a highlymodifiable construction and/or building as the end result, which is costeffective and easy to assemble.

According to an embodiment each end portion may comprise side walls,arranged to extend between the upper and lower plate members, which sidewalls and plate members define an inner channel which may extend fromend surfaces of the end portions in a longitudinal direction into theconstruction element.

This has the advantage the additional structural elements such asdifferent types of beams and frames may be inserted into the innerchannels of the end portions and be held in place at predeterminedpositions with respect to adjacently arranged room units or otherstructural elements. If the construction element is used in a buildingor construction comprising a plurality of room units, wherein saidelements are arranged at connecting corners of said room units, theinner channels of the end portions may be arranged to align with theouter walls of such room units. Thereby said inner channels of the endportions may be evenly spaced out along a surface which is to be anouter wall of the final building or construction. The inner channels maythus be available for connection to a plurality of structural elementsalong said outer wall. If beams or similar are inserted into such endportion frameworks of flanged and protrude out from the outer wall,walkways and balconies or similar may easily be attached to such anouter wall. The inner channels may further be utilized as connectingpoints if two or more construction elements are to be connected inseries, wherein a standardized adaptor element corresponding in sizewith the channels may be coupled between two such laterally joinedelements.

According to an embodiment each inner channel of the end portions mayfurther comprises a coupling element arranged within said each channeland protruding out from each end portion with a second distance, whereineach coupling element may comprise a circumferential side wall and ahollow interior, said interior being arranged to receive additionalstructural elements.

Such a coupling element may thus be used as an adaptor element aspreviously described. The protrusion of said element may also be used asa spacer for arranging structural elements such as insulation elementsor similar, wherein a standardized spacing is provided by means of saidprotrusion.

According to an embodiment each coupling element may further comprisetwo interior partition walls, arranged in a cross shape so as to dividethe hollow interior into four equal sub-sections.

This provides the beneficial option of utilizing a plurality oflongitudinally oriented channels to the construction element, whereinsuch channels may be used for installation and attachment of structuralelements or components which are to be arranged at, or adjacent to, anouter wall of such a structure. As the construction element may bearranged intermediate four room units (or more) in such a way that saidfour room units are arranged each of the four right angled abutmentsurfaces of an end portion, four such channels will be arranged atcorresponding equal positions relative a corner of each room unit. Thismay provide an advantage in that mechanical elements and/or structureswhich are to be arranged at, or adjacent, a facade or an outer wall of abuilding or construction may easily be arranged in a standardized mannerfor such facades and/or outer walls. As an example, if a balcony, aprojection, an access balcony or similar is to be arranged at such awall, said channels provide equally spaced insert channels for beamsand/or frameworks of such structures. Furthermore, if the constructionelement is used as part of a module and/or a prefabrication buildingsystem, additional specially designed structural elements intended to beused as frameworks for balconies or similar structures may be designedto be inserted into said channels for a secure and fast installation. Ifsuch a specially designed framework for a balcony is to be arranged to abuilding which comprises the construction elements as described, suchframeworks may simply be arranged with four parallel oriented cornerbeams, positioned at corners of such a framework corresponding to fourchannels of four individual construction elements, arranged atcorresponding corners of a room unit. Such a framework may then beinserted into said four channels and thus be positioned correctly withregards to the functionality of a balcony relating to said room unit,and also provide a rigid framework with a high standard of mechanicalintegrity.

According to an embodiment an upper surface and a lower surface of theupper and lower plate members comprises a plurality of flange elements,arranged between the distance elements of the end portions, each flangehaving a width corresponding to the width of the distance elements.

This has the advantage of further strengthening the structural integrityof the construction element, as well as providing additional abutmentsurfaces so as to complement the abutment surfaces of the end portions.Furthermore, the flange elements also provides sub-sections to thevolume between the distance elements of the opposite end portions. Suchsub-sections may be utilized as insert positions for a wide variety ofadditional structural elements. If a construction element is in aposition relating to an outer wall of a completed construction, suchsub-sections may be used for receiving outer wall elements, windowframes and/or insulation material for such an outer wall. If such aconstruction element instead is positioned in-between two adjacent roomunits, such sub-sections may be used for insertion of bridgingstructural elements such as door frames. Such bridging structuralelements may be used if, for example, two room units are arranged andattached to a construction element side by side so as to create twoadjacent rooms in a construction, facility or building, wherein bothsaid room units are provided with corresponding openings arranged toalign with each other. A doorframe element, designed to fit in theshaft, intermediate the two openings of the room units, may then easilybe positioned between the two said openings to bridge said shaft at thatposition, and connect the two room units. The flange elements may thusfurther assist in a correct positioning of such a bridging structuralelement wherein the flange elements any type of such a bridging elementmay be utilized as corresponding fitting parts of a prefabricationsystem using a construction element as disclosed herein.

Hence, such a feature may provide the additional advantage of makingstandardized installations to a construction element comprising suchflange elements. When used as part of a prefabrication building system,said sub-sections may be utilized for corresponding standardizedstructural elements of various designs for various effects. As anotherexample, standardized sheets of insulation material may be prefabricatedto be arranged in each such sub-section, wherein installation of such ismade very easy and fast due to the sub-sections providing astandardization model for such processes.

According to an embodiment the upper and lower plate members maycomprise a plurality of via holes, having a predetermined shape.

This may provide an even further advantage with respect to fitting ofand installation of structural elements and/or service installationcomponents. Said service installation components may be componentsrelated to plumbing, electrical installation, network cables,ventilation components or other. Such via holes combined with thehorizontal and vertical shafts provided intermediate all room unitsbeing part of a complete construction comprising a construction elementaccording to the disclosure may thus provide easy access to all roomunits from all sides of said room unit by means of providing aninterconnected network of such shafts throughout the construction.Installation of service installation components is thereby made fast,easy and cost effective. This relates to both installations duringassembly, both off site and on site, of a construction and installationperformed post a completed assembly, as well as for maintenance work tosuch components. The predetermined shape may further be utilizing bymeans of providing structural elements and/or modules, which are to bearranged to the construction element, with form fitting means having acorresponding shape, wherein fitting of such modules and/or elements maybe performed in a fast, easy and precise manner.

According to an embodiment a module may be provided, which module may beused for a prefabrication building system. Such a module may comprise atleast one construction element according to the disclosure and at leastone another structural element or element.

Such a module may for example comprise a room unit wherein said roomunit is arranged at the right angled abutment surfaces of at least oneconstruction element. Such a module may further comprise additionalstructural elements pre-arranged thereto, wherein such a structuralelement is arranged to the at least one construction element, orarranged to fit to a construction element of an adjacent similar module.Such modules may thus provide a very fast and easy on-site assembly aseven less work is needed on-site to assemble a construction, facility orbuilding by means of using such a prefabrication building system withsuch modules. Similarly to a construction comprising a constructionelement according to the disclosure and thus having the benefits of itstechnical features, a module comprising a construction element accordingto the disclosure may be provided with the benefits of the technicalfeatures of such a construction element.

According to an embodiment a construction is provided, whichconstruction may comprise at least one construction element according toany of the embodiments of such a construction element as presented anddescribed within the disclosure.

As should be obvious, such a construction may thus be provided with thevarious features and advantages as related to the construction element.For an embodiment of the construction element from which a beneficialtechnical feature is provided to said construction element, aconstruction comprising such a construction element may thus utilize thetechnical effect of such a feature, which technical effect is providedto such a construction.

According to an embodiment a method for assembling a constructionaccording to a predetermined scheme is provided. The construction maycomprise a plurality of structural elements and service installationcomponents. Such structural elements may comprise; at least onefoundation element, at least one room unit, a plurality of facadeelements, and a plurality of construction elements for attachment ofsaid structural elements. The number and position of each structuralelement may be determined by the predetermined scheme. Such apredetermined scheme may be a blueprint or similar relating to theconstruction. The construction element may comprise an upper platemember and a lower plate member, which may have a same width and a samelength and extending parallel to each other at a first distance. Theupper and lower plate members may be connected to each other alonglongitudinal sides of said plate members by means of a plurality ofintermediate beams. Each end portion may further comprise at least oneupper and at least one lower distance element having a width and aheight, and may be arranged at an upper surface and a lower surface ofsaid end portions respectively, wherein a longitudinally transversalcross section of each end portion may form a cross-shaped circumference,wherein said circumference may comprise four right angled abutmentsurfaces, defined by the plate members and the distance elements. Themethod may comprise the step of: a) arranging a number of constructionelements at the at least one foundation element by means of couplingeach downwards directed distance element of each construction element tothe at least one foundation element, defining a first floor level bymeans of the construction elements.

A method is thus provided which may be used to reinforce a presentfoundation element with multifunctional construction elements.Furthermore, which is beneficial, the method provides a framework ofconstruction elements at which different types of constructions may bearranged, wherein the construction elements provide a reliable fittingfor room units which are part of such a construction. The method may, asstated, used at a location having at least one foundation element. Thusthe method may be used at a site having a pre-arranged foundationspanning over the entire area where the construction will be raised. Afirst arranged layer of construction elements (as in the defined firstfloor level) may thus be positioned at their respective positionsaccording to the predetermined scheme. Such a foundation element may bemodified to make receiving of said construction elements easier and moreprecise, such as arranging form fitting means to such a foundationelement. A plurality of specially designed additional foundationelements may also be positioned at the pre-arranged foundation element,wherein the additional foundation elements may be designed tospecifically receive the distance elements of the construction elementsand be designed to be positioned at an underlying foundation element ina reliable and correct manner. A first plane or layer of constructionelements will define a reliable and mechanically stable underlying levelof any type of construction being arranged thereto. Furthermore, thearranging of a plurality of construction elements in such a manner mayalso define a first floor level by means of said construction elements,which first floor level may be perceived as a first floor of aconstruction being arranged at the construction elements. Due to thedesign of the construction elements, comprising the distance elements, afirst horizontal shaft or extending space may also be defined within thearea covered by the first layer of construction elements.

According to an embodiment the method may further comprise the step of:c) arranging a number of room units at the construction elements of thecurrent floor level according to the predetermined scheme, wherein afloor portion of each room unit may be coupled to the right angledabutment surfaces of at least two construction elements.

The method may thus be utilized as a means of providing a first floor ofa building or construction, wherein said room units define rooms of sucha construction corresponding to a floor of the same. As said room unitsare arranged at the right angled abutment surfaces of the constructionelements, their positions relative each other and the constructionelements may be regarded as fixed according to the predetermined scheme.This provides the advantage that such adjacent rooms of a floor, beingthe adjacent room units, may be provided with a plurality of shafts,which shafts have predetermined positions and extension relative theroom units of a construction defined by the arranged room units. Saidshafts may be defined as a results of the distance elements of theconstruction elements, wherein such shaft may extend adjacent each roomunit, both horizontally and vertically. Such shafts may be utilizedduring assembly of (both off site and on site), and during planning of,said construction. Depending on the type of construction being built,said shafts may be utilized in various ways, wherein factors such assurrounding climate, desired and/or requirements of the constructionwith regards to its usage, or other, may dictate how said shafts arebeing utilized. As examples, said shafts may be provided with insulatingmaterial, mechanically strengthening elements, service installationcomponents to name a few.

According to an embodiment the method may further comprise the step of,before the step c): b) arranging service installation components for acurrent floor level according to the predetermined scheme.

If a construction which is being assembled by means of said method hasrequirements related to living spaces for people, such serviceinstallation components may be pipes, tubes, cables or similar relatedto ventilation, plumbing, electrical devices or other. By means of theshafts being defined by the construction elements, and are extendingadjacent each room unit of such a construction, installation of suchcomponents may be very fast, easy and cost effective. Furthermore, assuch shafts are extending both horizontally and vertically, suchinstallations may easily be initiated and expanded over each floor of acompleted construction, wherein each room unit is reachable from eachside of such a room unit. Thus, such installations may be performed fromwalls, floors and ceilings of such constructions. This is verybeneficial as such installations are not dictated by layouts of theconstruction or of specific room units. Redesigns of a construction, asfor example swapping places with a future living room and a future bathroom is thus made possible without major destructive operations to suchroom units. Future instalments of any of the previously namedcomponents, and/or other instalments related to a modification of acompleted construction may also be performed with relative ease as theshafts are extending throughout such a completed construction. Withoutdeviating from the inventive concept of the method, said serviceinstallation components may also relate to mechanical structures, unitsand/or elements relating to mechanical installations, such as doorframes, window frames or similar, wherein such structures, units and/orelements may be arranged between or adjacent room units according to thepredetermined scheme.

According to an embodiment the method may further comprise the steps of:d) arranging a number of construction elements at the room units of theprevious floor level according to the predetermined scheme, wherein eachconstruction element is coupled to at least one roof portion of the roomunits by means of the right angled abutment surfaces, and defining anadditional floor level, e) repeating steps b) to d) so as to reach atotal number of floor levels according to the predetermined scheme, andf) arranging the plurality of facade elements at walls of the roomunits, which walls are defined as outer walls according to predeterminedscheme.

As should be obvious, the method may thus be used according to itsintended concept to provide a repeating configuration of constructionelement and room units, wherein the construction being built of saidelements and units also may be provided with any type of serviceinstallation components needed. Said service installation components mayfurther be arranged at any interior side of any room unit due to thenetwork of shafts provided by means of the frameworks of theconstruction elements situated intermediate said room units. Facadeelements may then be arranged to complete the construction, wherein saidfacade elements may be arranged adjacent walls which are to be outerwalls of the construction by means of the frameworks of the constructionelements. The facade elements may comprise insulating material or otherneeded materials, structures and/or devices, wherein such facadeelements may provide a desired protective and functional surface andvolume to such outer walls. Insulating material may also be arranged tothe construction as individual elements, wherein the facade elements arearranged adjacent, or in the vicinity of, such elements comprisinginsulating material.

Other additional elements and prefabricated structures may also bearranged to a construction built according to the method. Entire unitsand/or elements may be prefabricated so as to fit with such aconstruction, wherein such units and/or elements may be, for example,staircase units, elevator units, roof units, roof elements, balconyunits, landscape units, entrance units or other, so as to provide acompleted finish to the construction being built.

Thereby a method is provided which has several benefits. Such a methodmay be very fast, cost- and time-effective and thus provideconstructions which are correspondingly cheap and fast to produce. Asshould be noted, the method using a construction element according tothe disclosure may provide the benefits of such a construction elementand its technical features which it provides to a construction utilizingsuch a construction element. The method may furthermore provide uniquebenefits relating to the method itself and advantages related toconstruction work. The predetermined scheme may be a blueprint over theconstruction to be constructed, wherein the number of all ingoingstructural elements and components and their respective positions areknown beforehand. It should thus be understood that the positioning ofeach element or component may be similar to that of known methods havingsimilar purposes, however, the order of assembly and the aspects of themethod relating to how the different construction and structuralelements are arranged to each other may provide unique advantages to themethod.

Additional objectives, advantages and novel features of the inventionwill be apparent to one skilled in the art from the following details,and through exercising the invention. While the invention is describedherein, it should be apparent that the invention may be not limited tothe specifically described details. One skilled in the art, havingaccess to the teachings herein, will recognize additional applications,modifications and incorporations in other areas, which are within thescope of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Below is a description of, as examples, preferred embodiments withreference to the enclosed drawings, in which:

FIG. 1a shows a construction element in a perspective view according toan embodiment,

FIG. 1b shows a construction element in a perspective view according toan embodiment,

FIG. 1c shows a construction element in a perspective view according toan embodiment,

FIG. 2a shows a construction comprising a plurality of constructionelements in an exploded view according to an embodiment,

FIG. 2b shows a construction comprising a plurality of constructionelements in a perspective view according to an embodiment,

FIG. 3 shows a module comprising a plurality of construction elementsand additional structural elements according to an embodiment, and

FIG. 4 shows a flowchart of a method for assembly of a constructioncomprising a plurality of construction elements according to anembodiment.

DETAILED DESCRIPTION

FIG. 1a shows a construction element 1 in a perspective view accordingto an embodiment. The construction element 1 may be used for attachmentof structural elements thereto so as to assemble a construction, afacility, a building or similar. The construction element 1 may comprisean upper plate member 3 and a lower plate member 5, having a same width7 and a same length 9 and extending between two end portions 11,parallel to each other at a first distance 13. The first distance 13 maybe perceived as the distance in-between the upper and lower platemembers 3, 5. The upper and lower plate members 3, 5 may be connected toeach other along longitudinal sides 15 of said plate members 3, 5 bymeans of a plurality of intermediately arranged beams 17. The upper andlower plate members 3, 5 and the interconnecting beams 17 may bemanufactured of planks and/or processed wood elements so as to provide aconstruction material with good mechanical properties and heat transferproperties while being easy to manufacture at a low cost. However othertypes of construction materials may also be used without deviating fromthe inventive concept of the disclosure. It should also be noted thatthe term beam 17 may be perceived as a connecting member between theupper and lower plate members 3, 5, which is arranged to attach the twoplate members 3, 5 to each other, take up load applied to theconstruction element 1 as a whole and increase the mechanical stabilityand integrity of said construction element 1. The wording beam 17 maythus be viewed in a broad sense of the word, and/or be interchanged withconnecting member, load bearing element or other. Each end portion 11may further comprise at least one upper and at least one lower distanceelement 19 having a width 21 and a height 23, and being arranged at anupper surface 25 and a lower surface 27 of said end portions 11respectively. The opposite symmetrical arrangement of said two distanceelements 19 provides a shape for each end portion 11 wherein alongitudinally transversal cross section of said each end portion 11forms a cross-shaped circumference, said circumference comprising fourright angled abutment surfaces 29, defined by the plate members 3, 5 andthe distance elements 19. Each such right angled abutment surface 29 maythus comprise a vertical portion 31 and a horizontal portion 33, whereineach said abutment surface 29 may be arranged to adjacent structuralelements in a precise and easy to fit manner. Arrangements of structuralelements towards the right angled abutment surfaces 29 may be donedirectly or by means of also including intermediate shim elements. Suchshim elements may be arranged so as to modify certain types ofcharacteristics related to construction work and completedconstructions, such as heat transfer and/or vibrations to name a few. Bymeans of arranging an intermediate shim element of, for example, rubberor a polymeric material, a completed construction may be provided withmore desirable living conditions related to occurrences such astemperature flux, sound and noise, vibrations or other.

When arranging a larger type of structural element towards each suchright angled abutment surface 29, as for example four room units,wherein each room unit is arranged as close to a centre C of theconstruction element as possible, the construction element 1 may thendefine a predetermined spacing of said room units relative each other.Two horizontally adjacent room units, being arranged towards oppositeright angled abutment surfaces 29 of the same vertical level of theconstruction element, will thus be spaced apart from each othercorresponding to the width 21 of the intermediate distance element 19.The width 21 of said distance element 19 will thus further define avertically oriented shaft 35 between said two room units. In a similarmanner, two vertically adjacent room units, being arranged towardsvertically opposite right angled abutment surfaces 29 of theconstruction element 1, will thus be spaced apart from each othercorresponding to the first distance 13 between the upper and lower platemembers 3, 5 and a thickness T of the upper and lower plate members 3, 5respectively. The first distance 13 and the thickness T of the two platemembers 3, 5 will thus further define a horizontally oriented shaft 37between said two room units. Thereby the construction element 1 mayprovide a secure and reliable arrangement of a plurality of structuralelements arranged thereto and also provide both vertical and horizontalshafts 35, 37, extending along structural elements such as room units.Such shafts 35, 37 may be very advantageous as they provide thepossibility to arrange an array of different types of serviceinstallation components and other types of auxiliary elements related toconstruction work and/or constructions comprising such a constructionelement 1. The distance elements 19 may be made as hollow boxes, whereinsuch box-like elements may further be filled with insulation material.Thereby heat transfer may be reduced at the end portions 11 of theconstruction element 1, which portions 11 are of the most importancerelating to heat transfer as said portions 11 may be located in thevicinity of outer walls of a completed construction comprisingconstruction elements 1 according to the disclosure, which outer wallsmay be exposed to both high and low temperatures relative an interiorenvironment of said construction.

FIG. 1b shows a construction element 1 in a perspective view accordingto an embodiment. The construction element of FIG. 1b may be perceivedas similar to the construction element 1 presented in FIG. 1a , with theaddition of the feature that each end portion may comprise side walls39, arranged to extend between the upper and lower plate members 3, 5,wherein said side walls 39 and plate members 3, 5 may define innerchannels 41 which extend from end surfaces 43 of the end portions 11 ina longitudinal direction into the construction element 1. Each endportion 11 of the construction element 1 comprising such an innerchannel 41 provides even further possibilities of combinations of theconstruction element 1 and additional other structural elements.

Each such inner channel 41 may, as depicted in FIG. 1b , furthercomprise a coupling element 45 arranged within said each inner channel41 and protruding out from each end portion 11 with a second distance47. The inner channel 41 is shown in FIG. 1b by means of dotted lineswhich show edges and corners of said inner channel 41 and the couplingelement 45 in abutment with each other. Each coupling element 45 maycomprise a circumferential side wall 49 and a hollow interior, saidinterior being arranged to receive additional structural elements. Theembodiment as depicted in FIG. 1b should not be perceived as restrictivein the regard of possible combinations of structural elements arrangedto the inner channel 41 of the construction element 1 according to thedisclosure. As should be obvious there are a multitude of possiblecombinations for coupling of elements by means of the inner channel 41,wherein for the sake of simplicity this embodiment is to be viewed asone possible combination but not to be regarded as the only usefulcombination possible. Even though not depicted within the disclosure,other combination may also be possible, as for example longitudinalcoupling elements, which may be used to arrange and attach two or moreconstruction elements 1 to each other in length, wall elements, whichmay be inserted into such inner channels 41 to provide different typesof wall structures adjacent the end portions, or other.

Even further the coupling element may, as also depicted in FIG. 1b ,further comprise two interior partition walls 51, arranged in a crossshape so as to divide the hollow interior into four equal sub-sections53. This embodiment of such a coupling element 45 provides additionalbenefits for certain types of combinations of structural elements andthe construction element according to the disclosure (one such certaintype of combination will be discussed in detail with reference to FIGS.2a and 2b ). By means of dividing the interior of the inner channel 41into four equal sub-sections 53, each such sub-section 53 may providedifferent types of connecting possibilities to an adjacent room unit iffour room units are arranged to this embodiment of the constructionelement 1. This may provide a plurality of possible arrangements of theconstruction element 1 in combination with additional structuralelements wherein such additional structural elements are to be arrangedto each of the room units, arranged to the shared intermediateconstruction element 1.

FIG. 1c shows a construction element 1 in a perspective view accordingto an embodiment. According to this embodiment the upper surface 25 andthe lower surface 27 of the upper and lower plate members 3, 5 maycomprise a plurality of flange elements 55, arranged between thedistance elements 19 of the end portions 11, each flange element 55having a width 57 corresponding to the width 7 of the distance elements19. The flange elements 55 as depicted in FIG. 1c are shown to beapproximately Z-shaped, and comprising two abutment portions 59 and oneintermediate positioned stabilizing portion 61, wherein the width 57 isdefined as the distance between two parallel planes of which the twoabutment portions 59 are sub-set of. The flange elements 55 may exhibitother shapes, wherein the only definite criteria being that saidabutment portions 59 extend within said two parallel planes. As shouldbe obvious, the two parallel planes also align with the verticalportions 31 of the right angled abutment surfaces 29 of the distanceelements 19, wherein a structural element such as a room unit arrangedto such a construction element 1 may abut said vertical portions 31 ofthe distance elements 19 and at least one abutment portion 59 of eachflange element 55. This provides a reliable and stable constructionelement 1 comprising a plurality of contact points for arrangement ofother structural elements thereto. The flange elements 55 may furthercomprise pre-drilled holes (not shown) which may be used for a fast andsecure attachment to adjacent structural elements.

The flange elements may, as depicted in FIG. 1c , be arranged betweenthe two distance elements 19 in an evenly spaced out manner, wherein anintermediate distance 63 between the stabilizing portion 61 and anotherstabilizing portion 61 or a distance element 19 is equal throughout theconstruction element 1. This intermediate distance 63 may be set as anysuitable distance which correlates to a preferred construction workstandard, so as to achieve a system which is adapted to at least onespecific standard. As an example based on commonly used standards forSwedish construction work, both 600 millimetre and 1200 millimetre maybe suitable choices, as both those options provides common denominatorswith a large plurality of structural elements used in construction workin Sweden. As should be understood, the intermediate distance 63 may ofcourse easily be adapted for any desired standard or the like. Theconstruction element 1 according to the disclosure may be used as astructural element within a prefabrication building system, wherein aspecific standard may be set for such a system, and wherein theconstruction elements 1 and any other structural element being part ofsuch a system are manufactured based on said specific standard. Theintermediate distance 63 may also be utilized in combination with thevertically oriented shafts 35, which are provided to adjacent room unitsor the like by means of the distance elements, so as to providerepeating frameworks over the extension of the construction element 1.

The interior volume between two flange elements 55 may thus further beutilized for fitting of specially designed additional structuralelements and/or modules, such as doorframes, insulation sheets, windowframes or other. As an example, two room units may be arranged andattached to a construction element 1 side by side so as to create twoadjacent rooms of a facility, wherein both said room units are providedwith corresponding openings arranged to align with each other. For suchan example, a doorframe element or module, designed to fit in thevertically oriented shaft 35, intermediate the two openings of the roomunits, may then easily be positioned between the two said openings tobridge said shaft 35 at that position, and connect the two room units.The door frame element (or door frame module) may hence be designed tobe form fitted between two flange elements 55 of the constructionelement 1. Thereby such an element or module may be fitted to theconstruction element 1 and the room units arranged thereto in a veryfast, easy, precise and reliable manner. Thus, an embodiment of theconstruction element 1 comprising such flange elements 55 as describedmay be very suitable as being a part of a prefabrication buildingsystem, which system is fast, easy and cost effective to use forassembly of different types of constructions and facilities.

Furthermore, as the previously described shafts 35, 37 are arranged bothbetween side by side room units and two room units positioned verticallyadjacent each other, service installation components may also beinstalled easily, both in shafts 35 between walls, and in shafts 37between different floors. Such service installation components may becomponents related to plumbing, electrical installation, network cables,ventilation components or other. Even further, as the shafts 35, 37 areprovided intermediate each room of a construction constructed in such amanner, maintenance work and future installations are also made easieras the shafts 35, 37 provide easy access to such components wherein onlydrilled holes may be needed to get access to the shafts 35, 37 anddepending on placement of such components, the walls, floors or ceilingsof the room units may not need to be destroyed at all as the shafts 35,37 may also provide access from the sides of room units.

The flange elements 55 may be manufactured of steel or a similar type ofconstruction material. Thus mechanical strength and stability isprovided to a completed construction in a common and reliable manner.Furthermore, if said flange elements 55 are made of a magnetic material,a device such as a rebar detector or similar may easily be used frominside of an adjacent room so as to find the standard used for eachconstruction. Thereby maintenance work may be performed with less riskof damaging service installation components installed within shafts 35,37, as the flange elements 55 indicate where such components are likelyto be found within each shaft. Said service installation components maybe pre-manufactured as modulus, similar to the previously described doorframe element/module. Each such component module may then comprisepipes, tubes and/or wiring pre-installed in a structural module which isdesigned to fit between two flange elements 55 in the same manner as thedoor frame element/module. Hence installation of such modules may evenfurther alleviate time consuming and cumbersome operations relating tosuch installation work.

The embodiment of the construction element 1 may further, as depicted inFIG. 1c , comprise a plurality of via holes 65, arranged in the upperand lower plate members 3, 5. The upper and lower plate members 3, 5 maythus comprise a plurality of via holes 65, which via holes 65 may have apredetermined shape. As depicted in FIG. 1c , the via holes 65 accordingto this embodiment may have elongated extension with rounded endportions, but other shapes are of course also possible as long as themechanical integrity of the construction element 1 as a whole is keptintact. The via holes 65 may be utilized for a fast and easyinstallation of service installation components which are to beinstalled spanning over a plurality of shafts 35, 37 and pass through atleast one such construction element 1. The via holes 65 may in a veryeasy manner provide a standardized pattern for installation of suchcomponents, wherein components passing through such via holes 65 aredirectly coupled to the shafts 35, 37 adjacent room units in a correctway. A construction element 1 may also be provided with components suchas forks and bends for pipes, or with electrical junction boxes, whereinsuch auxiliary components may be pre-arranged within the hollow centreof the construction element 1 and be arranged therein in combinationwith coupling elements for receiving straight pipes, for the example ofpipes. Thereby straight pipes may be coupled to such forks and bends,and wiring may be performed between such junction boxes. If theconstruction element 1 is provided with such additional auxiliarycomponents, on site construction work related to assembly of aconstruction may be performed in an even faster and more efficientmanner.

It should be noted that the features presented with reference to FIG. 1cnot necessarily have to be present in a combination as shown. Theconstruction element 1 may be manufactured without via holes 65, whereinholes may be drilled on site if components are to be arranged throughthe construction element 1. The flange elements 55 may also not bepresent if suitable, wherein the via holes 65 may be utilized forfitting of additional structural elements instead of said flangeelements 55. Structural elements and/or modules may be manufactured withform fitting means arranged to fit the predetermined shape of the viaholes 65, wherein said via holes 65 may provide an additionalalternative function as a replacement of the flange elements 55.

The construction element 1 may be provided as part of a constructionmodule for a prefabrication building system. For such a system aplurality of modules may be produced by means of arranging elements,components and/or modules to a construction element 1. Some exampleshave been described herein, but are to be viewed as examples and notrestrictive with regards to possible combinations. All possiblecombinations are not described herein as, as should be obvious, a totalnumber of possible combinations would be too many to list herein. Atleast one construction element 1 may be part of such a module incombination with at least one of the structural elements, components ormodules from a group comprising; a room unit, a facade element, afoundation element, a pipe, wires, tubing, a roof element, a balconyelement, a door frame, a window frame, insulation material, or acombination of such to name a few. By means of pre-arranging suchmodules construction work on site at a construction work place may beminimized and be extremely fast and easy to perform.

FIG. 2a shows a construction 67 comprising a plurality of constructionelements 1 in an exploded view according to an embodiment. Theconstruction 67 depicted comprises four room units 69 of varying designsbut with the same exterior length, height and width, a total of nineconstruction elements 1, to be arranged at longitudinal edges of saidroom units 69. The construction 67 further comprises two foundationelements 71, two roof elements 73, a balcony framework 75, a variety ofservice installation components 77, and a plurality of facade elements79. As may be seen in FIG. 2a , all units and elements as listed hereinare connected to at least one construction element 1, either directly orby means of another intermediate element. (Note: for the sake ofsimplicity the individual parts/elements of the construction elementsare not marked with reference numbers in FIG. 2a and FIG. 2b )Additional structural elements may of course be added to theconstruction 67 in various ways, but it should be noted that theconstruction elements 1 provide a plurality of functions to theconstruction 67, by means of being a multifunctional element to saidconstruction 67. As has been described within the disclosure, the roomunits 69 are arranged at the right angled abutment surfaces of theconstruction elements 1. The foundation elements 71 and the roofelements 73 may also be arranged to said abutment surfaces, wherein thefacade elements 79 and the service installation components 77 arearranged to contact surfaces of the plate members, flange elements, viaholes, or a combination thereof. Additional fastening elements such asscrews, nails or similar may of course be added to the construction andits contact points so as to achieve mechanical stability and strength.Other materials and/or attachment methods such as adhesives, clamps, orwelding may also be used for specific abutments of elements, dictated bythe different materials used. The balcony framework 75 may be aframework of steel or similar and may comprise four corner beams 81which are designed fit a sub-section 53 of a coupling element 45arranged at end portions 11 of the construction elements 1 (saidsub-sections 53 and coupling elements 45 being described in detail withreference to FIG. 1b ). Said corner beams 81 may then be inserted into asub-section 53 of such a coupling element 45, wherein each sub-section53 used corresponds to the sub-section 53 closest to each corner of theroom unit 69 to which the balcony framework 75 is to be arranged. Asshould be understood, such an arrangement is thus possible for all roomunits 69 of the construction 67 by means of construction elements 1comprising such coupling elements 45, and being divided into suchsub-sections 53. Thereby different types of balconies may be arranged tothe entirety of a wall of such a construction 67 if desired.

FIG. 2b shows a construction 67 comprising a plurality of constructionelements 1 in a perspective view according to an embodiment. Theconstruction 67 depicted in FIG. 2b may be perceived as the sameconstruction 67 depicted in FIG. 2a but in a completed state. FIG. 2aand FIG. 2b may preferably by viewed as complementing to each otherwherein some details and/or couplings of different elements may beeasier to view in one or the other. As should be understood from theentirety of the disclosure, the completed construction shown in FIG. 2bcomprises a plurality of vertical and horizontal shafts or spaces,extending intermediate the different room units (not shown). All neededservice installation components may thus extend throughout the networkof shafts, so as to easily be installed in each room unit according tothe blueprint of the construction 67.

The construction according to FIG. 2a and FIG. 2b further comprises arooftop structure 83, arranged on top of one of the roof elements 73.The rooftop structure 83 may, as should be obvious, not be arrangeddirectly to any of the construction elements 1, but is to be viewed asan example of an additional added feature of such a construction 67.There are pluralities of modifications and added features which may beadded as complements to a construction 67 according to the disclosure,wherein some may utilize the multi-functionality of the constructionelement 1 directly. As an example an exteriorly arranged staircase orsimilar may be arranged to the construction 67 shown in FIG. 2b , as ameans to reach the rooftop structure 83, wherein such a staircase may beattached adjacent an outer wall similarly to how the balcony framework75 is arranged, that is, by means of inserting and attaching attachmentbeams or similar in the coupling elements of the construction elements1.

FIG. 3 shows a module 85 comprising a plurality of construction elements1 and additional structural elements according to an embodiment. Themodule 85 may, as depicted in FIG. 3, comprise four constructionelements 1, arranged at longitudinal edges of a room unit 69. Theconstruction elements 1 may be perceived as similar to the embodiment ofa construction element 1 with reference to FIG. 1c , however, otherembodiments are also possible wherein the module 85 according to FIG. 3is to be viewed as an example. The module 85 further comprisesadditional structural elements in the form of service installation units87, each comprising a plurality of service installation components 77,wherein the service installation components 77 may comprises a number ofdifferent types of components as has been described previously withinthe disclosure. The service installation units 87 may be pre-assembledby means of combining service installation components 77 and structuralbuilding elements so as to provide said service installation units 87.The service installation units 87 may then arranged to the room unit 69and the construction elements 1 wherein the arrangement of the serviceinstallation units 87 may be securely attached within the structure ofthe module 85. As is further seen in FIG. 3, door frame units 89 mayalso be arranged within a completed module 87, wherein the two doorframe units 89 according to FIG. 3 have different designs with respectto their respective widths. The different units, elements and/orsub-modules which may be arranged within one module 85 may of coursevary within a wide range of combinations, wherein the plannedconstruction 67 which is to be assembled using a plurality of thesetypes of modules dictates which units, elements and/or sub-modules areto be arranged where according to the planned construction 67. As shouldbe obvious, if a module 85 as shown in FIG. 3 is to be a room of aconstruction 67, an adjacent similar module does not need to bepre-arranged with a construction element 1 where said similar module isarranged to this specific module 85, due to the module 85 shown alreadycomprising construction elements 1 at all longitudinal edges of thecentrically positioned room unit 69. Alternative modules 85 may ofcourse also be provided within a prefabrication building system, such asfor example modules 85 comprising two construction elements 1, arrangedat opposite edges of a room unit 69 wherein a plurality of such modulesmay be positioned adjacent each other without individual modifications,as long as there is one construction element 1 at what will be the emptylongitudinal edge of an outermost module 85. One module 85 according toFIG. 3, or a similarly designed module 85 within the scope of thedisclosure, may advantageously be manufactured and assembled at aconstruction facility or similar, wherein it may then be transported toa construction site, where on site assembly may be very fast andefficient. Furthermore, one such module 85 may be designed andconstructed in such a manner that it will fit in a pre-assembled statewithin a standardized shipping container or similar. Therebytransportation of such modules may be handled in a very easy and costeffective way, wherein unnecessary costs are kept at a minimum. Themodules 85 may further also be provided with at least parts of thefacade elements 79 which are to be used for a construction 67. Thus onsite assembly work is lowered even further. A prefabrication buildingsystem utilizing modules 85 according to this embodiment may thusprovide a very cost effective and easy assembly of constructions 67,wherein a large portion of the work needed for such an assembly may beperformed in a manufacturing and/or assembly facility, wherein on siteconstruction work is kept to a bare minimum.

FIG. 4 shows a flowchart of a method for assembly of a construction 67comprising a plurality of construction elements 1 according to anembodiment. The construction 67 may further comprise a plurality ofstructural elements and service installation components 77. Suchstructural elements may comprise; at least one foundation element 71, atleast one room unit 69, and a plurality of facade elements 79. Anexample of such a construction 67 may be the construction 67 shown inFIG. 2a and FIG. 2b , but without the balcony framework 75 and therooftop structure 83, or a similar type of construction. The number andposition of each structural element 1, as well as the other structuralelements may be determined by the predetermined scheme. Such apredetermined scheme may be a blueprint or similar relating to theconstruction 67. The construction elements 1 used may be perceived asthe construction element 1 shown in FIG. 1c . However, other embodimentsof the construction element 1 according to the disclosure may also beused depending on the type of construction being built, or by means ofperforming additional detail work if needed, for example for providingholes for service installation components 77. The method provided andshown in the flowchart according to FIG. 4 may present the basic conceptof the method, however additional steps relating to commonly practicedconstruction work such as drilling, fastening by means of screwing,nailing or such, painting or other such type of work is not presentedherein for the sake of simplicity. The method may comprise the step of:a) arranging a number of construction elements 1 at the at least onefoundation element 71 by means of coupling each downwards directeddistance element 19 of each construction element 1 to the at least onefoundation element 71, defining a first floor level by means of theconstruction elements 1. The foundation element 71 may be apre-fabricated foundation element 71 or module, designed to be part of aprefabrication building system utilizing at least one constructionelement 1 according to the disclosure. However a regular flat foundationmay also be used, alone or in combination with such a pre-fabricatedfoundation element 71 or module. A plurality of specially designedadditional foundation elements may also be positioned at a pre-arrangedfoundation element, wherein the additional foundation elements may bedesigned to specifically receive the right angled abutment surfaces ofthe distance elements of the construction elements. The constructionelements 1 are arranged to at least parts of the distance elements 19 ofthe construction elements 1 by means of the right angled abutmentsurfaces 29. By means of arranging a first layer of constructionelements 1 a first floor level may be defined.

It should be noted that the term floor level is meant to be viewed as aplane of construction elements 1 to be used as connecting elements offloors of a floor of a construction 67. If a construction 67 having aplurality of floors is build, another floor level will thus relate tothe next floor of said construction 67. As a layer of spaced outconstruction elements 1 are arranged at roof portions of room units 69of the current floor of the construction, said layer of constructionelements 1 are to be viewed as a next floor level if another floor is tobe arranged over the current floor level. When the desired total numberof floor levels is reached, according to the predetermined scheme, thelast layer of construction elements 1 may instead be viewed as a rooflevel of the construction 67.

The method may further comprise the step of: c) arranging a number ofroom units 69 at the construction elements 1 of the current floor levelaccording to the predetermined scheme, wherein a floor portion of eachroom unit 69 may be coupled to the right angled abutment surfaces 29 ofat least two construction elements 1. The method may thus be utilized asa means of providing a first floor of a building or construction 67,wherein said room units 69 define rooms of such a construction 67corresponding to a floor of the completed construction 67. As said roomunits 69 are arranged at the right angled abutment surfaces 29 of theconstruction elements 1, their positions relative each other and theconstruction elements 1 may be regarded as fixed according to thepredetermined scheme, wherein horizontal and vertical shafts 35, 37 arealso defined adjacent each room unit 69. The room units 69 may furtherbe securely attached to the construction elements 1 by means of any typeof fastening method known in the arts and suitable for the materialsbeing joined together.

The method may further comprise the step of: b) arranging serviceinstallation components 77 for a current floor level according to thepredetermined scheme. As has been described, such service installationcomponents 77 may be pipes, tubes, cables or similar related toventilation, plumbing, electrical devices or other, but also certainkinds of structural elements such as elements, sheets or blockscomprising insulation material or other similar types of materials formodification of properties of a construction 67. Such components mayalso relate to specially designed modules such as door frames or thelike, which also has been described within the disclosure. The step b)may be performed before step c), as shown in the flowchart according toFIG. 3. However, the steps b) and c) may be performed in the oppositeorder, or be performed simultaneously. The method may further bemodified by means of providing the service installation components 77 tothe construction 67 in the form of modules, which may be regarded asstructural elements comprising pre-installed such components 77 therein.Such modules may be combined with the construction elements 1, or withthe room units 69 of the construction 67, or a combination of suchcombined modules. As should be noted, if modules 85 such as the oneshown in FIG. 3 are used, the method may easily be adapted to conform toan assembly of a construction 67 using such modules instead. For suchcases the steps b) and c) may be substituted to another step whichcomprises positioning of modules 85 comprising all necessary serviceinstallation components 77, pre-assembled within each used module 85.Depending on the design of each and every used module 85 within acompleted construction 67, all steps within the method may be somewhataltered as some elements and/or units may already be part of a moduleinstead of being arranged to the construction 67 as an individual part.

The method may further comprise the steps of: d) arranging a number ofconstruction elements 1 at the room units of the previous floor levelaccording to the predetermined scheme, wherein each construction element1 is coupled to at least one roof portion of the room units 69 by meansof the right angled abutment surfaces 29, and defining an additionalfloor level, and e) repeating steps b) to d) so as to reach a totalnumber of floor levels according to the predetermined scheme.

The construction 67 may then be completed by means of step f) arrangingthe plurality of facade elements 79 at walls of the room units 69, whichwalls are defined as outer walls according to predetermined scheme. Suchfacade elements 79 may comprise insulation material build into thefacade elements 79, or such insulation material may be provided by meansof separate insulation sheets or blocks or similar as previouslydescribed. Furthermore, the construction 67 may be completed after stepf), but it is to be understood that the construction 67 as describedherein merely is one example of such a construction 67. Additionalstructural elements, modules and/or auxiliary additional room units 69may also be added to such a construction 67 wherein the method may bemodified to take such alterations into account. As have been exemplifiedwith reference to FIG. 2a and FIG. 2b , structures such as balconyframeworks 75 or rooftop structures 83 may be added to such a structure,but also other additional structures such as staircases, porches,exterior lighting or similar may also be incorporated in a modifiedembodiment of the method as presented.

The foregoing description of the embodiments has been furnished forillustrative and descriptive purposes. It is not intended to beexhaustive, or to limit the embodiments to the variants described. Manymodifications and variations will obviously be apparent to one skilledin the art. The embodiments have been chosen and described in order tobest explicate principles and practical applications, and to therebyenable one skilled in the art to understand the invention in terms ofits various embodiments and with the various modifications that areapplicable to its intended use. The components and features specifiedabove may, within the framework of the embodiments, be combined betweendifferent embodiments specified.

1. A construction element for attachment of structural elements, saidelement comprising an upper plate member and a lower plate member,having a same width and a same length and extending between two endportions, parallel to each other at a first distance, wherein the upperand lower plate members are connected to each other along longitudinalsides of said plate members by means of a plurality of intermediatebeams, wherein each end portion comprises at least one upper and atleast one lower distance element having a width and a height, and beingarranged at an upper surface and a lower surface of said end portionsrespectively, wherein a longitudinally transversal cross section of eachend portion forms a cross-shaped circumference, said circumferencecomprising four right angled abutment surfaces, defined by the platemembers and the distance elements.
 2. The construction element accordingto claim 1, wherein each end portion comprises side walls, arranged toextend between the upper and lower plate members, which side walls andplate members define an inner channel which extend from end surfaces ofthe end portions in a longitudinal direction into the constructionelement.
 3. The construction element according to claim 2, wherein eachinner channel of the end portions further comprises a coupling elementarranged within said each channel and protruding out from each endportion with a second distance, each coupling element comprising acircumferential side wall and a hollow interior, said interior beingarranged to receive additional structural elements.
 4. The constructionelement according to claim 3, wherein each coupling element furthercomprises two interior partition walls, arranged in a cross shape so asto divide the hollow interior into four equal sub-sections.
 5. Theconstruction element according to claim 1, wherein an upper surface anda lower surface of the upper and lower plate members respectivelycomprises a plurality of flange elements, arranged between the distanceelements of the end portions, each flange portion having a widthcorresponding to the width and the height of the distance elements. 6.The construction element according to claim 1, wherein the upper andlower plate members comprises a plurality of via holes, having apredetermined shape.
 7. A module for a prefabrication building system,comprising at least one construction element according to claim
 1. 8. Aconstruction comprising at least one construction element according toclaim
 1. 9. A method for assembly of a construction according to apredetermined scheme, the construction comprising a plurality ofstructural elements and service installation components, said structuralelements comprises; at least one foundation element, at least one roomunit, a plurality of facade elements, and a plurality of constructionelements for attachment of said structural elements, wherein the numberand position of each structural element is determined by thepredetermined scheme, said construction element comprising an upperplate member and a lower plate member, having a same width and a samelength and extending parallel to each other at a first distance-,wherein the upper and lower plate members are connected to each otheralong longitudinal sides of said plate members by means of a pluralityof intermediate beams, wherein each end portion comprises at least oneupper and at least one lower distance element having a width and aheight, and being arranged at an upper surface and a lower surface ofsaid end portions respectively, wherein a longitudinally transversalcross section of each end portion forms a cross-shaped circumference,said circumference comprising four right angled abutment surfaces,defined by the plate members and the distance elements, the methodcomprising the step of: a) arranging a number of construction elementsat the at least one foundation element by means of coupling eachdownwards directed distance element of each construction element to theat least one foundation element, defining a first floor level by meansof the construction elements.
 10. The method according to claim 8,wherein the method further comprises the step of: c) arranging a numberof room units at the construction elements of the current floor levelaccording to the predetermined scheme, wherein a floor portion of eachroom unit is coupled to the right angled abutment surfaces of at leasttwo construction elements.
 11. The method according to claim 9, furthercomprising the step of, before the step c): b) arranging serviceinstallation components for a current floor level according to thepredetermined scheme.
 12. The method according to claim 10, furthercomprising the steps of: d) arranging a number of construction elementsat the room units of the previous floor level according to thepredetermined scheme, wherein each construction element is coupled to atleast one roof portion of the room units by means of the right angledabutment surfaces, and defining an additional floor level, e) repeatingsteps b) to d) so as to reach a total number of floor levels accordingto the predetermined scheme, and f) arranging the plurality of facadeelements at walls of the room units, which walls are defined as outerwalls according to predetermined scheme.